Deardorff V8 8X10 Camera Extension Guides
Brand new, from the original Deardorff inventory.
This is the guide that keeps both the front and rear extensions flush with the camera.
Originally, these were made of nickel-plated brass. These new parts are made of hardened stainless steel, with the same dimensions and hole locations.
Pro tip: Each camera had its guide rail holes aligned manually when hand-assembled in the factory. Both sides are not the same, so it's wise to always mark the rails left and right as well as note the front and rear, as they should all be put back together in the same order and side as they were installed originally.